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International Journal of Marine Science 2014, Vol.4, No.38, 1-4
http://ijms.biopublisher.ca
1
A Letter Open Access
Caudal Fin Deformity in the Wild Silver Pomfret
Pampus argenteus
Collected
from the Arabian Gulf Coasts of Oman
L. A. Jawad
Flat bush, Manukau, Auckland, New Zealand
Corresponding author email
International Journal of Marine Science, 2014, Vol.4, No.38 doi: 10.5376/ijms.2014.04.0038
Received: 19 Feb., 2014
Accepted: 06 May, 2014
Published: 15 Jun., 2014
Copyright
©
2014 Jawad, This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use,
distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:
Jawad, 2014, Caudal Fin Deformity in the Wild Silver Pomfret
Pampus argenteus
Collected from the Arabian Gulf Coasts of Oman, Indonesia, International
Journal of Marine Science, Vol.4, No.38 197-209 (doi: 10.5376/ijms.2014.04.0038)
Abstract
A wild silver pomfret,
Pampus argenteus
with deformity in the caudal fin is described and compared with normal fish
specimen. Among the severe abnormalities observed is the complete absence of the caudal skeleton. Minor abnormalities such as
undulation of caudal fin rays and pterygiophores and deformity of the haemal spines were encountered in the caudal region of the
specimen. The potential causative factors of this anomaly were discussed.
Keywords
Caudal fin deformity; Skeletal abnormalities; Silver pomfret; Arabian Gulf
Introduction
Description of the morphological deformities in fish in
general and skeletal abnormalities in particular have
very good attendance in the literatures (Tutman et al.,
2000; Jawad and Hosie, 2007; Jawad and Öktoner,
2007;Jawad et al. 2007; Jawad et al., 2010; Al-Mamry
et al., 2010). Because of their high incidence .in
polluted areas, they are used as indicators of the
environmental pollution (Bengtsson, 1979). In
aquaculture and in the wild, cases of deformity involve
absence of the tail, or partial tail (single-lobed), double
or triple tail or lobes, compression (Honma, 1990;
Dunham et al., 1991; Lemly, 1993; Honma, 1994;
Divananch et al., 1996; Jawad
et al
., 2010). The only
caudal deformity case reported from the Omani waters
is that of the mullet species,
Moolgarda pedaraki
(Jawad and Al-Mamry, 2012).
Pampus argenteus
(Family: Stromateidae) is a benthopelagic, marine and
oceanodromuous species that lives in the Omani
waters of the Arabian Gulf in particular and in the
Indo-West Pacific from the Arabian Gulf to Indonesia,
north to Hokkaido and Japan (Froese and Pauly, 2010).
In these areas, it has high local economic importance,
mostly living and reproducing in the sea during its
whole life cycle (Cruz et al., 2000). It is exposed to
many physical and chemical variations, from
temperature to pollution, in these most threatened
ecosystems (Araghi, 2010). This study describes a
case of tail deformity in one specimen of the teleost
fish
P. argenteus
and shows how it possible for the
environmental pollution to have such an effect on
fishes which in turn it draws the attention of the
society to care for the health of their environment.
1 Materials and methods
Ten specimens of
Pampus argenteus
showing variable
cases of deformity of the caudal fin (TL 250-258mm,
SL 168-170 mm, 320g) were caught by cast net from
the Omani waters of the Arabian Gulf at Khasab City,
South west of the Arabian (Figure 1).Ten normal
specimens varying in size between 183-260 mm, TL,
173-180mm SL were obtained from the same locality
for comparison. There were a total of 250 fish
specimens in the catch and the deformed specimens
represent 4% of the total catch. The specimens were
measured using digital calliper to the nearest mm and
weight using electronic balance to the nearest gram.
One of the deformed specimens that shown to bear all
types of abnormalities present in the other deformed
specimens and considered the most deformed
specimen among the rest of the abnormal specimens is
radiographed with ordinary X-rays to interpret the
skeletal anomaly and to check for other anomalies.The
specimens were deposited in the fish collection of the
Marine Science and Fisheries Centre, Ministry of
Fisheries Wealth, Muscat, Sultanate of Oman,
catalogue number OMMSTC 1095. Water sample was
taken to measure the ecological variables such as